Net Loss Per Share Attributable to Common Stockholders

3 Months Ended

Mar. 31, 2021

Net Loss Per Share Attributable to Common Stockholders

Note 11. Net Loss Per Share Attributable to Common Stockholders

A reconciliation of the numerator and denominator used in the calculation of the basic and diluted net loss per share attributable to common stockholders is as follows (in thousands, except share and per share data):

	Three Months Ended March 31,
	2021			2020
Numerator
Net loss attributable to common stockholders	$	(55,993	)	$	(38,503	)
Denominator
Weighted-average common shares outstanding used to calculate net loss per share attributable to common stockholders, basic and diluted		90,044,082			86,588,796
Net loss per share attributable to common stockholders, basic and diluted	$	(0.62	)	$	(0.44	)

The following securities were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented, because including them would have been anti-dilutive (on an as-converted basis):

	March 31,
	2021		2020
Options to purchase common stock		4,807,661		7,988,747
Restricted stock units		6,784,012		1,752,275
Estimated shares issuable under the Employee Stock Purchase Plan		61,766		—
Assumed conversion of the Convertible Senior Notes		18,746,323		—
Total		30,399,762		9,741,022

The Convertible Senior Notes issued in June 2020 and in March 2021 are convertible, based on the applicable conversion rate, into cash, shares of the Company’s common stock or a combination thereof, at the Company’s election. The impact of the assumed conversion to diluted net loss per share is computed on an as-converted basis.